Abstract
We investigate crack forerunning and bridging with numerical models on three different structures. Bridging is observed in a heterogeneous saturated lattice model in quasi-static conditions under fluid injection. A single episode of forerunning in a dry double beam in dynamics confirms that forerunning increases the overall crack tip advancement speed with respect to a steady-state behaviour and finally we show on a two-dimensional specimen that in presence of a fluid forerunning increases the overall advancement speed even more.
Our friendship started in the late 80ties. In 89 my former student, now Professor, Giorgio Zavarise visited Peter in Hanover and later in Darmstadt. In 97 our families met in front of Old Faithful in Yellowstone Park and my daughter Lorna visited Peter’s home in Hanover. We also had a common doctoral candidate Hong Wu Zhang from Dalian, now Professor. In 2005, thanks to the efforts of Peter and the late Professor Erwin Stein, I was awarded an honorary Doctorate in Engineering at the Leibniz University of Hanover.
—Bernhard Schrefler
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Milanese, E. et al. (2022). Forerunning and Bridging in Dry and Saturated Fracturing Solids. In: Aldakheel, F., Hudobivnik, B., Soleimani, M., Wessels, H., Weißenfels, C., Marino, M. (eds) Current Trends and Open Problems in Computational Mechanics. Springer, Cham. https://doi.org/10.1007/978-3-030-87312-7_33
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DOI: https://doi.org/10.1007/978-3-030-87312-7_33
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